Information sources and services in library science pdf

In general, there are three types of resources or sources of information: primary, secondary, and tertiary. It is important to understand these types and to know what type is appropriate for your coursework prior to searching for information. When searching for articles, it's important to know what type of source, or periodical in which the articles are published. This is beacuse each type has its own purpose, intent, audience, etc. This guide lists criteria to help you identify scholarly journals, trade journals, and magazines. It is the first step in critically evaluating your source of information.

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A library is a curated collection of sources of information and similar resources, selected by experts and made accessible to a defined community for reference or borrowing. It provides physical or digital access to material, and may be a physical location or a virtual space, or both. A library's collection can include books , periodicals , newspapers , manuscripts , films , maps , prints , documents , microform , CDs , cassettes , videotapes , DVDs , Blu-ray Discs , e-books , audiobooks , databases , and other formats. Libraries range widely in size up to millions of items. The first libraries consisted of archives of the earliest form of writing —the clay tablets in cuneiform script discovered in Sumer , some dating back to BC.

Use of Information Sources and Services in University Libraries by Sadu Department of Library and Information Science, Sri Venkateswara University, Tirupati.
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